Trophic interaction between an introduced (peacock bass) and a native (dogfish) piscivorous fish in a Neotropical impounded river

@article{Fugi2008TrophicIB,
  title={Trophic interaction between an introduced (peacock bass) and a native (dogfish) piscivorous fish in a Neotropical impounded river},
  author={Rosemara Fugi and Karla D. G. Luz-Agostinho and Angelo Antonio Agostinho},
  journal={Hydrobiologia},
  year={2008},
  volume={607},
  pages={143-150}
}
In order to investigate trophic interactions, the diets of peacock bass (Cichla kelberi) and dogfish (Galeocharax knerii) were studied in the Corumbá Reservoir between 1997 and 2000. This dietary study was performed to assess the niche breadth of each species and to determine the degree of niche overlap during different phases of reservoir colonization. During Period I, peacock bass were absent or recorded only in low numbers; during Periods II and III, peacock bass reached high abundances in… 

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References

SHOWING 1-10 OF 50 REFERENCES
Long-term variation in piscivory in a brown trout population: effect of changes in available prey organisms
TLDR
The piscivorous behaviour in a brown trout population was studied in four discrete periods over seven decades in the hydroelectric reservoir Tunhovdfjord in Norway and coefficient of variance of back-calculated lengths indicated significant variation in individual growth in age group ≥6 years from 1950 onwards.
Changes in the feeding biology of the Nile perch, Lates niloticus (L.) (Pisces: Centropomidae), in Lake Victoria, East Africa since its introduction in 1960, and its impact on the native fish community of the Nyanza Gulf
TLDR
The present investigation has revealed that the diet of Lates niloticus is now almost entirely comprised of Caridina nilotica, a small microphagous prawn, and juvenile Lates, a result of the shattering impact Lates predation has had on the native fishes, which have been virtually wiped out.
Temporal patterns of resource partitioning among Cichla species in a Venezuelan blackwater river
In channel and floodplain habitats of the Cinaruco River, Venezuela, Cichla temensis was more abundant and larger than C. intermedia and C. orinocensis. Seasonal variation in hydrology influenced
Feeding patterns in five predatory fishes of the high Paranà River floodplain (PR, Brazil)
TLDR
Detrended correspondence analysis was effective in discriminating two groups of predators species that exploited distinct microhabitats; the predators with the least scores consumed small characids that inhabit mid-water or the littoral region, whereas those with the largest scores consumed prey associated to the bottom.
Spatial and seasonal patterns in the feeding habits of juvenile Lates niloticus (L.), in the Mwanza Gulf of Lake Victoria
TLDR
Stomach content analysis showed that with increase in size, the diet of Nile perch shifted from zooplankton and midge larvae, to macro-invertebrates (shrimps and dragonfly nymphs) and fish, and the contribution of prey types appeared to be habitat related.
Resource use by large catfishes in a reservoir: is there evidence for interactive segregation and innate differences?
TLDR
Blue catfish and channel catfish in Lake Texoma showed very high overlap in food use, but substantial differences in use of habitat during the year, which probably also reflect evolved, historical differences in ecology of the two species.
Dieta do tucunaré-amarelo Cichla monoculus (Bloch & Schneider) (Osteichthyes, Cichlidae), no Reservatório de Lajes, Rio de Janeiro, Brasil
TLDR
The diet of Cichla monoculus in Lajes's Reservoir, a major impoundment in Rio de Janeiro State, Brazil, was assessed, from fishes collected in 1994, 1996 and 1999/2000, showing a strong piscivorous habits feeding on Cichlidae, Characidae and Pimelodidae, in decreasing order of importance.
Species Introduction in a Tropical Lake
TLDR
It will be some time before it can evaluate the permanence or transience of the many changes produced in the trophic levels by the introduction of a single, top-level predator to this lake system.
Food spectrum and trophic structure of the ichthyofauna of Corumbá reservoir, Paraná river Basin, Brazil
TLDR
It is expected that sampling over a large temporal and spatial scale, including environmental changes such as impoundments, will allow for most of the diet plasticity to be covered, and the efficacy of ordination method in discriminating trophic groups based on fish species diet is evaluated.
Piscivory and prey selection of four predator species in a whitefish dominated subarctic lake
TLDR
The specialist piscivores, pike and burbot, consumed more prey species and took a wider range of prey sizes than Arctic charr and brown trout, and the prey length for all predators increased in relationship to predator length.
...
1
2
3
4
5
...